<template>
  <div class="cmt-container">
    <h3>发表评论</h3>
    <hr />
    <textarea placeholder="请输入评论内容(最多120字)" maxlength="120" v-model="msg"></textarea>

    <mt-button type="primary" size="large" @click="addComment">发表评论</mt-button>

    <div class="cmt-list">

      <div class="cmt-item" v-for="(item,index) in newsComments" :key="index">
        <div class="cmt-title">第{{index+1}}楼&nbsp;&nbsp;用户：{{item.userName}}&nbsp;&nbsp;发表时间：{{item.addTime | dataFormat('YYYY-MM-DD')}}</div>
        <div class="cmt-body">{{item.content}}</div>
      </div>

    </div>

    <mt-button type="danger" size="large" plain @click="getMore">加载更多</mt-button>
  </div>
</template>


<script>

import { Toast } from "mint-ui"


export default {
  data() {
    return {
        newsComments:[],
        msg:'',
    };
  },
  created(){
      this.getComments();
  },
  methods: {
    getComments() {
      this.$http.get("/src/data/newsComments.json").then(result => {
        if (result.status === 200) {
          // this.newsComments = this.newsComments.concat(JSON.parse(result.bodyText)[this.id]);
          this.newsComments = this.newsComments.concat(JSON.parse(result.bodyText)["1"]);
        } else {
          Toast("获取新闻评论失败！");
        }
      });
    },
    getMore(){
        this.id++;
        this.getComments();
    },
    addComment(){
        if(!!this.msg){
            this.newsComments.unshift({
                "userName": "匿名用户",
                "addTime": new Date(),
                "content": this.msg
            });
            this.msg=""
        }else{
            return Toast("请输入评论内容！");
        }
    }
  },
  props: ["id"]
};
</script>


<style lang="scss" scoped>
.cmt-container {
  h3 {
    font-size: 18px;
  }
  textarea {
    font-size: 14px;
    height: 85px;
    margin: 0;
  }
  .cmt-list {
    margin: 5px 0;
    .cmt-item {
      font-size: 13px;
      .cmt-title {
        line-height: 20px;
        background-color: #ccc;
      }
      .cmt-body {
        line-height: 35px;
        text-indent: 2em;
      }
    }
  }
}
</style>